Controversy continues to boost CBS’s glass-house competition series Big Brother, which delivered its largest audience of the summer for the second consecutive broadcast (6.84 million viewers) and matched Thursday’s summer high in adults 18-49 (2.4 rating). Big Brother was Sunday’s No. 1 ranked program in adults 18-49 and adults 25-54. That said, BB isn’t out of the weeds yet: through 11 telecasts, its collective ratings remain tied with its weakest start ever, matching its previous all-time low through eleven episodes, set in summers of ’09 and ’12. Meanwhile, Fox’s preview of its new Saturday Animation Domination High-Def exceeded the network’s internal expectations, ratings-wise. The collective half-hour premieres of Axe Cop and High School USA! clocked 2.51 million viewers and a 1.1 rating in the demo. Except total viewers and 18-49 isn’t the target audience — it’s young guys. The unveiling of the two shorts averaged 512,000 guys 18-34 — which is still a little old for this franchise. That was most closely followed in the half hour, among broadcasters, by NBC’s 269,000 in that demo — with a Law & Order: SVU repeat!